• Abelbolla boucheri Huang & Zhang, 2004
• Abelbolla huanghaiensis Huang & Zhang, 2004
• Abelbolla maemulensis Hong & Lee, 2014
• Abelbolla major Hiang, Wang & Huang, 2015
• Abelbolla warwicki Huang & Zhang, 2004
• Admirandus belogurovi Tchesunov, Mokievsky & Nguyen Vu Thanh, 2010
• Admirandus capibaribei Cavalcanti, Guilherme & Rosa-Filho, 2023
• Admirandus multicavus Belogurov & Belogurova, 1979
• Admirandus papillatus (Kreis, 1932) Shimada & Kajihara, 2014
• Admirandus sanjuliensis Lo Russo, Villares & Pastor de Ward, 2016 (uncertain > taxon inquirendum)
• Adoncholaimus aralensis Filipjev, 1924
• Adoncholaimus austrogeorgiae Allgén, 1959
• Adoncholaimus bandaensis Kreis, 1932 accepted as Meyersia bandaensis (Kreis, 1932) Hopper, 1967
• Adoncholaimus chilkensis (Stewart, 1914) Kreis, 1934 (uncertain > taxon inquirendum)
• Adoncholaimus chinensis Huang & Zhang, 2009 accepted as Admirandus multicavus Belogurov & Belogurova, 1979
• Adoncholaimus crassicaudatus accepted as Adoncholaimus crassicaudus Wieser, 1953
• Adoncholaimus crassicaudus Wieser, 1953
• Adoncholaimus daikokuensis Shimada & Kajihara, 2014
• Adoncholaimus derjugini (Ssaweljev, 1912)
• Adoncholaimus exoptatus Belogurova & Belogurov, 1974
• Adoncholaimus falklandiae Allgén, 1959
• Adoncholaimus fervidus Kirjanova, 1965
• Adoncholaimus fuscus (Bastian, 1865) Filipjev, 1918
• Adoncholaimus indicus (von Linstow, 1907) Filipjev, 1918
• Adoncholaimus islandicus Kreis, 1963
• Adoncholaimus lepidus (de Man, 1889) Filipjev, 1918
• Adoncholaimus longicaudatus Paramonov, 1929
• Adoncholaimus longispiculatus Gagarin & Thanh, 2007
• Adoncholaimus meridionalis Kreis, 1932 accepted as Meyersia meridionalis (Kreis, 1932) Hopper, 1967
• Adoncholaimus minor Gagarin & Nguyen Dinh Tu, 2016
• Adoncholaimus nudus Kreis, 1932 accepted as Kreisoncholaimus nudus (Kreis, 1932) Rachor, 1969
• Adoncholaimus oxyuroides (Allgén, 1934) Wieser, 1953
• Adoncholaimus panicus Cobb, 1930
• Adoncholaimus papillatus Kreis, 1932 accepted as Admirandus papillatus (Kreis, 1932) Shimada & Kajihara, 2014
• Adoncholaimus parvus Gagarin & Thanh, 2003
• Adoncholaimus pseudofervidus Shimada & Kajihara, 2014
• Adoncholaimus punctatus (Cobb, 1914) Filipjev, 1924
• Adoncholaimus quadriporus Belogurova & Belogurov, 1974
• Adoncholaimus squalus (Wieser, 1953) Shimada & Kajihara, 2014
• Adoncholaimus taboguillensis (Allgén, 1947) Wieser, 1953
• Adoncholaimus thalassophygas (de Man, 1876) Filipjev, 1918
• Adoncholaimus thalassophygas tvaerminneanus Schneider, 1926 accepted as Adoncholaimus thalassophygas (de Man, 1876) Filipjev, 1918
• Adoncholaimus ussuriensis Mordukhovich, Atopkin, Fadeeva, Yagodina & Zograf, 2015
• Amphistenus agilis Marion, 1870 accepted as Symplocostoma tenuicolle (Eberth, 1863) Wieser, 1953
• Amphistenus pauli Marion, 1870 accepted as Calyptronema acuminatum (Eberth, 1863) Wieser, 1953
• Anoncholaimus mobilis Cobb, 1920
• Anoncholaimus rhopalurus Schuurmans Stekhoven, 1950 accepted as Bradybucca rhopalura (Schuurmans Stekhoven, 1950) Schuurmans Stekhoven, 1956
• Aronema crinita Fadeeva & Belogurov, 1988
• Asymmetrella glabra Cobb, 1920 (uncertain > nomen dubium)
• Bathyeurystomina minima Nasira, Shahina & Shamim, 2014
• Bathyeurystomina rockallensis Lambshead & Platt, 1979
• Bathyeurystomina valeriae Lambshead & Platt, 1979
• Belbolla angusta (Kreis, 1929) Schuurmans Stekhoven, 1935 accepted as Polygastrophora alexandriae (Schuurmans Stekhoven, 1943) Wieser, 1953
• Belbolla asupplementata (Juario, 1974) Andrássy, 1973
• Belbolla californica (Allgén, 1951) Andrássy, 1973
• Belbolla gallanachmorae (Inglis, 1961) Andrássy, 1973
• Belbolla gracilis Gagarin & Thanh, 2016
• Belbolla heptabulba (Timm, 1961) Andrássy, 1973
• Belbolla huanghaiensis Huang & Zhang, 2005
• Belbolla insula Belogurov, Fadeeva & Belogurova, 1983
• Belbolla intarma Belogurov & Belogurova, 1980
• Belbolla longispiculata Nasira, Shahina & Shamim, 2014
• Belbolla sinica Wang, Guo & Wang, 2022
• Belbolla stenocephalum Huang & Zhang, 2005
• Belbolla sundaensis (Micoletzky, 1930) Andrássy, 1973
• Belbolla teissieri (Luc & De Coninck, 1959) Andrássy, 1973
• Belbolla tenuidens (Cobb, 1920) Andrássy, 1973
• Belbolla vietnamica Gagarin & Nguyen Dinh Tu, 2016
• Belbolla warwicki Huang & Zhang, 2005
• Belbolla wonkimi Rho, Lee, Lee & Min, 2020
• Belbolla zhangi Guo & Warwick, 2001
• Bernardius lineatus da Fonsêca-Genevois, Smol, Decraemer & Venekey, 2009
• Bolbella alexandriae Schuurmans Stekhoven, 1943 accepted as Polygastrophora alexandriae (Schuurmans Stekhoven, 1943) Wieser, 1953
• Bolbella californica Allgén, 1951 accepted as Belbolla californica (Allgén, 1951) Andrássy, 1973
• Bolbella cobbi Micoletzky, 1922 accepted as Polygastrophora hexabulba (Filipjev, 1918) Filipjev in Kreis, 1926
• Bolbella cylindricauda Allgén, 1959 accepted as Polygastrophora hexabulba (Filipjev, 1918) Filipjev in Kreis, 1926
• Bolbella gallanachmorae Inglis, 1961 accepted as Belbolla gallanachmorae (Inglis, 1961) Andrássy, 1973
• Bolbella heptabulba Timm, 1961 accepted as Belbolla heptabulba (Timm, 1961) Andrássy, 1973
• Bolbella hexabulba Stekhoven, 1950 accepted as Polygastrophora hexabulba (Filipjev, 1918) Filipjev in Kreis, 1926
• Bolbella pacifica Ditlevsen, 1930 accepted as Polygastrophora hexabulba (Filipjev, 1918) Filipjev in Kreis, 1926
• Bolbella sundaensis Micoletzky, 1930 accepted as Belbolla sundaensis (Micoletzky, 1930) Andrássy, 1973
• Bolbella teissieri Luc & De Coninck, 1959 accepted as Belbolla teissieri (Luc & De Coninck, 1959) Andrássy, 1973
• Bolbella tenuicollis Allgen, 1951 accepted as Polygastrophora tenuicollis (Allgen, 1951) Wieser, 1953
• Bolbella tenuidens Cobb, 1920 accepted as Belbolla tenuidens (Cobb, 1920) Andrássy, 1973
• Bolbella tobagoensis Allgén, 1947 accepted as Polygastrophora tobagoensis (Allgen, 1947) Wieser, 1953
• Bolbellia asupplementata Juario, 1974 accepted as Belbolla asupplementata (Juario, 1974) Andrássy, 1973
• Bradybucca pontica (Sergeeva, 1974) Belogurov, 1977
• Bradybucca rhopalura (Schuurmans Stekhoven, 1950) Schuurmans Stekhoven, 1956
• Bradystoma longisetosum Schuurmans Stekhoven, 1943 accepted as Calyptronema longisetosum (Schuurmans Stekhoven, 1943) Wieser, 1953
• Cacolaimus papillatus Kreis, 1932 (uncertain > taxon inquirendum)
• Calyptronema acuminatum (Eberth, 1863) Wieser, 1953
• Calyptronema axonolaimoides Allgén, 1959
• Calyptronema cobbi (Cobb, 1920) Wieser, 1953
• Calyptronema denticulatum (Micoletzky, 1930) Wieser, 1953
• Calyptronema eberthi (de Man, 1876) Schuurmans Stekhoven, 1950
• Calyptronema hopperimeyersi Belogurov, 1979
• Calyptronema ila Belogurov, 1979
• Calyptronema keiense Wieser, 1953
• Calyptronema klatti (Allgén, 1953) Wieser, 1953
• Calyptronema longicauda (Allgén, 1933) Wieser, 1953 (uncertain > taxon inquirendum)